Type-writing machine.



Cii

entirety. The mechanism that ean thus be assembled outside and put intothe niaehine :is a whole. also ineludes other deviees in addition tothosev above mentioned. AS here shown. eaeh rod l2 has eaeh o't' itsends bearing' against the innei` face of a bracket 2() and seeured inplaee bv a serew 23. as shown in Fig. 3. The eonstruetion is Snell thatin'assen'iblinger the machine the key levers 11 and sleeves 19 arestrung;` along" the rod 1;). whieh is then inserted between the twobraekets 20 and seeured in plaee by the serews 23.

The keys l() are arranged in three rows.

as is usual in typewriters in whieh there arel three types on eaeh typebar, and of these the rear row is the highest and the front row lowest.as is also usual. All of those keiv levers 1l whose kevs are in the rarrow are pivoted ion tlie rearniost one of the three bars 12: those keylevers whose keys are in the niiddle row are pivoted on tlieniiddle oneof said bars. and those whose kevs are in the liront row :im` pivoted onthe Jforward one ot said rods. this arrangement being of eoiuse for thesake ol` nniloi'niitiy of levelajn'e. said rods being so disposed thatall of ilie ki-.vs lll have substantially the saine leverage on theirrespeetive lin'Il-:s lil.

ln addition lo plat-iii;` the rods l! one in liront ol' another. l havealso plaied, tliein :il ilill'erent elevations eori e:-poiiding lo thedille-reni elevations o''vthe several rows of li'evs lll. i have plaeedthese rods thus in order that all ol the keys l() ni:| v have. not onli'the saine extent ot inotion but also the, saule diria-lion of inotioii.i l prel'er in this respei'l the arrangement shown in Fig', 1 whereezii'i oll the rods ll has its renier a liille below ilie uppersiirl'aees ol: the eorresponding keys. when said keys are in i-ior nialposition. and a little above the upper surlziee o'll ani' one ol` saidkeys when said l\;e v is in ils depressed position. `\\'ilh the i-als l2disposed in tliisniainier. :zieh of the li'eyvs l0 hasv a substaniialliyvertieal i'iiotion. rtypewriter lv'ev levers have iisualljvv heretoforebeen pivoted :ill on the saine level. the pivots being usually in :ilower plane than the ke vs. 'l`he result ot this eonstruetion has beenthat the keys have had 'a niotion, noi vertieal. bnl in a palh downiiardand somewhat inelined toward the front ot' the niaeliine. :ind thekeys-iii the rear row have iiioved in paths inore sharply inelinedtowai'd the liront than those of the lorward row.. B v llie arrangementshown'. all ot the keys move. as was said above. in substantially`vertieal paths. rlliis feature of a."- rane'inie' the l'uleruni rods1:2 in the dill'erent elevationsl :is deseribed. is not essential to'they sum-ess o't' the other l'eatures of nii' invention. liul leonsider it to be of advantage.

As the s ,'st:n oinv type bars is narrower than the system ot keys, thekey levers ll said levers and io a series of hooks siii alli' torined onthe lower edge. ol a thm plate 2li, whieli plate is riveted to :iiliiekei.

plate 2T which is seeured by sere 28 to the bark plate ot' the base l ofthe traine. As shown in Fig'. if, the serews Q8 pass through slots 29 soas to niake the Compound plate '26, 2? adjustable up and down toreguh'ite the tension the springs.

The links 18 are preferably se torined :is to be readilyrdiseonneetible. '4l-he lower parts of the type aetion. ineludi the. keylevers. are assembled separateli' 'troni the upper part and it'taeilitatesthe inaniit'aeture ot the inaeliine to have these linksreadil)Y diseonneetible.

The type action is so designed as to ailord what is eoininonliv ealledin llie :ii-t an aef'elerated motion" to the type liar. that is to say.the leverage of the type liar oirthe kei' is substantially greater al'tlnA end ol the ke): stroke than it is at the benaming ot the-- kei'stroke. This is due in the prenait in niainl): lo two thin inve n lielirst plaee. the rearivardli' extending: arnisv :it the salt-levers: il.normally stainl little above the horizontal, :issliown iii si: thateve-:i ai. the beginning' of i kei4 J 'the niotion :ill llie zipper endel 'the link E 'is :u :in iiielinaien ioii'ard {iie 'trout it inni-lune.ai i. the

measured troni the l lever arni said liiii. wire Si) perilieiidieularij;to said link,v d'ziiiiir islies eonstantl'v duran' tl stroke un l at theend ol said stroke. as ,siiiiivn iii lfiis. 5 and i3. said lever afin isn .zerialli' shorter than al the he "i the stroke: but even :ii the endsaid leve :irin is siill oll a sub1-taut .iug'tin 'lle seeoiiil -ause nltlu 'alled :ieeelerathiii is tound in the .lisposiiion el! llie other:irai al said lever ll. wlii' Y. arni nernizdlir iii-tends doii'n- 'wardand te. :4 nt o eiine. as iudiealed in l" l. and :it the end nl :i keivstroke this .irni exn s not very tar lroiii vei'tiealli. Ie resa.: thatthe lever arin ot' the lever il on tlm lin est when llie paris are in no(though it is el' l;

llienly and is :ilioni :il its nialin'ii-uii when the, type har is atprinin v posiiion, Vi'liere are thusy iwf: souri-es nl aei'eleiaiiou andthey are so related hat the ,fnzil eliangz'e in lever-- age lag-tweenthe kei' and the tipe liar.

e id. is rliiil'iequal to the prodiaft oi the eliange to theeli'anrfinltf leverage ol the i il en the luik lil inulti ilied bi t'rtiti lever e iethi even,

iii-3 @Gopal times as groat at tho ontl ot tho koy Stroke as it i whontho partal are in normal position.

rl`ho uib-'lorora ll inay ho niountoil ainl arraugoil l For oxaniplo.tho sant suh-loyors lan ho arrangfoil in tho aro ot' a oirolo tooorrospontl with tho aro ot tho typo hars. hut ninlor thoao ooinlitionstho links 123 would ho ot' litl'oront longths. ln tho prosont instant-o.howoyor. l havo Shown tho sub-lovors arrangoil in a atraight row ainlall piyoto l on a Iatl'aight pivot wiro Ill) soatoil in a groove; Ill iutho roar faoo ot' a Cross bar 232. said. rross bar boinj .r fornioll atits roar Ililo also. with a sorios of yorlit'ul slots in which thofnlnloyors aro guhlial. Tho links l5 aro oonnootial with tho typo barsahoyo tho pivots ol' tho lattor. :intl saiil linksr oxtoinl troni tholl\ii\i-lt\\'ti-,\` lvl at variousy inolinatioiwto tho. horizontal. aswill bo uiulorstooil liroin Figs. l auml il, thoso links that oonnootwith tho, niilltllo typo hars haringY a aight ilownwartl. inolination:unl thoso oonnot'totl with tho oinl typo har4 ol tho systoin haringabout the Saulo ilojgroo ot' upwartl ini'lination. ln Fig'. l two typohars ainl thoir voluit-ating: links l5 aro Shown. ono hoingl' at thooxtronio lot'tliainl oinl ol tho aystoni ainl tho othor at ahoul ihoiniihllo ol tho systoni. lt will ho notial that in this liguro. wliioliallows thol partav in nornial positions. tho link l5 that i5 oonnootialwith tho niiiltllo typo har inakos a inoro ohtuso anglo with thouhlloror ll. than that link which is oonnoototl with tho oiul typo har.ln othor worils. tho lowor arnisy ot' tho suh-loyors ll aro norinallynioro noarly porpoinlioular to thoso link l5 noar tho onila of thosystoin than to thoso links l noar tho iniiltllo ot' tho systoin. hoobvious. thoro'toro. that whon tho koyl aro. opoi'atoll thizso typo haranoar tho iuithllo olI tho Hysi oni will ha \'o a hiltrhor aooolorationthan tho o noar tho oinlsol. tho systoln. fTho, initial loi'oralgo otEtho koy on tho typo har is fg'roator noar tho niiilillo of tho niaohino.than noar tho sitios ot tho niaohino. This is as it shoulil ho. hon-ansothoso typo hars noar tho ini `nllo of tho soginont, whon thoy :1ro lirstsot in niotion. aro moving luoro lirootly against gravity than thoaonoar tho, siilos ot' tho syatoni. whioh lattor inoyi'o upwar l at aoonSiilorahlo inolinatioujto tho, rortioal. 'l`ho oll'ool ol' this`arrant'oniont in tho prosoni instanoo is that tho touoh aoonif` to hoSubstantially unil'orin throuf'hout tho ay'stoiu.

fis l'ur an my inyontion is oonoornoil. tho typo hara Can bo pirotoil intho .aogniont 1S in any auitablo inannor. lts hlt'ro shown tho roar partol: Sant sogluont torniotl with rarlial l lots .-l in whioh tho' typobars aro, j fuiiloil. :unl aaiil typo hara` y,aro piyotoil on a wiro 3l'ring' in a slot 35 ont in tho` segment 1S, :nnl saiitwiro is sooi'irotlin place hy 'n any ono of a y'arioty ot' ways.V

lt will` into the the sep;- liroatl hoatlbv whi't'lt overlap Soro-wsi553. l and 5l. threaded nppor surliaoos of tho ond parts olf inont andharing` tho ontll ot' tho wiro.

yl`ho caso ahit't motion i oithor to tho sot'inont lh or to tho platenhut l hayo pro'lorrotl to Shift tho aoginent. To thia oinl saiilaogniont Constitut part ot a shift traino. boing supported at itsv endson arins or hars,` El?, Fig'. l. Those hars extoinl to tho aoginont .thit'roin tho roar` saitl hars boingr ritrii with tho cross bar 32, So thattho sotrinont 1N whit-h onnstitutos the supports tor tho typo hars ainltho Cross bar 32 whir-li oonstiintos tho support for the sub-loyors.both torniparts ot' one rigid shit'tahlo traino. arins -lll whiohoxtonil haokw'artl antl upward troni tho bar 32 and at their uppor roaroinls aro piy'ototl at 4l to tho stationary traine work. Thib rikt'ltlshift traino is Ot' Suoi oouhl ho inpartotl forni that i' is easilyinatlo .as an integral casting. ln tho prob-ont instant-o tho pivots -lloons ot tho rilnootl innor onda of pins whioh aro niountoil in poats t2whore they aro Sorlin/i atlinstably by moans ot sot sorowg Tho posts l2projoot upward troni parts ll that oxtontl inward 'from the roar onilsot tho Vtraino hars so that Said posta aro. in ol'ort, onsionb` o saidfranio hara.

- ilo roat lh. oonsistingf ot' a segmental ui aal piooo ot niotal Vith apad in it. is niountotl on tho 'torwarti arinbl lb: wliioh projoottoward` the it of tho iuaohino 'troni tho sog'inont 1S, no that saiflarin: ain! tho typo Yost constitute parta ot' tho shi'litzhlo traino inwhioh tho typo hara ainl snloloyors artl nionnteffl. The pad l? i rnnnlo ot oo rk olampotl in the casing lt' ot' shoot niotal. l lintl.that thor@ is a tlistinot :nlyautagofin makin;T this pail of oork wliiohsnhatanoo is praotioally Imis@- loss whon struok hy' tho roturning' typoVban and at tho santo tiino it is unusually free l'roin that `ort otroailionoo whirh rosults in ro'hounil. biaiil ihi'ttablo traino niay heVproi'iiloil with any auitahlo Spring' to assist in tho prosont inatairo e horishift prot'- in the s" of the tho front i mint tiA l 1n thoprosont instantie ocatott directly ainl horizontally in front ot thoaxis of the platen. the plano above tlosorihetl is a liori tlaiil trainoalso comprises' 1l plant: :intl thv axis ot the shift 1";'111119-wuiivtt horixoi'rully in thv wir o'l' tho plntvwt :1.1; .1 lt will. o1"voui-sv, hv underit it i5 not vssvntiul thntthv axis ot' l'ruinv `hvuhsolutvli' in this plunv.

hurl! f2 it substantially so.

"it will hf: pvrcvirvd that thv shi'l't t'ruinv is tvmlili tlvtnvhnhlv.so that in thv 1111111ufuzturv of thv nnufhinv, thv tipv 11111l 11nd.suhivvvi' s vstvin :tml thv, links 15. c1111 11ll he 11shlvtl in .suitltraine outside -11'l` thv 11111- chine 11ml thun put in pluvv 11s 11nvntirvty.

lnortlvr to provitlv for thv shift ot' thv s11t1-lvvv1s .t4 with thvtypv hztrs. thv :txis ot' the pivot-s ll i5 located snhstuntiully vinthv plant? which invludvs thv uppvr :1111i lowvr iinlis 11ll livsuhstuntiultv in thv s111110 f-tl phtnv 11nd. thatY living thv vusv.thv.

.pivots l :irv also lofzzttvtl in Suhl rvrtivzil plane. Said pivotszxrv. thvrvtore. 1n tht` hnv tzivisvtftion of thv vertical phtnv of thvlinks` with thv horr/,ontnl plaine ut tho .casing '1l adjusting'Kvrvwsh2 to thv r 'b21 r 2t that' vunstittuvs tlm support. for ivy ievvr si)11. Suid suppm't Gi. C5 consists ot but' or lilov z-iilie. piece of.mc-tui haring :1 trnnsrvrsv Al'ulvruni rih tl projvrting |"ro111-`itis4 untlvr sitlv :unl hvuriugl against thv uppvr xsurt'uvv ot' thvh11r il. 'l`hvsv1vws ('12 puss upwztrtl through thv lmr 2l unil urvthrvmlvtl into thv pivvv ttt. rl`l1v svrvw tt) c1111 hv nivvh :nljustml11s to vlvrzttion hy loosvnintg ouv of thv svrvws U2 11ml tightvning thvothvr.

'l`hv hvllcr11nh 5H to wl1i -h thv shift' kvy lv :vr 111'111 :'1t'1 isvonnvvtvtl. hns thv Jforni hvst shown in Fig'. 2 whvrv it will hv svvnthut 11v11r its uppvr viul sziitl lvrvr 11rn1is f'orinvtl with 11 vuri'v(35 t'or thv purposv of avoiding; intvrl'vrvnrv with thv :xvtion otc thvother shi lit lv \'.11111l uhm'v s11i l vurrc thv lvvvr 111111 isvurrvtl ozu-ltV upon itsvlt' in suvh 11 way 11s to t'orin :111 invlinvtlruin slot (36 :itluptvtl t0 coiipvrntv with 11 follower rollvr ('Tjournnletl on 11 pirot svrvw (3H which is thrvzulvtl into thv lvtt-huinisithl hvztr 21'1' 1f-thv shift frznnv. The construction is sut-l1 thutwhen thtl hey 5l is lvprvssv l thv upright 111111 ot' thv hullvrziiik55, inorvg towzirtl thv front of thv 111:1- rhinv 111111 the (11u11 slottit uvting on thv rollvr t3? cuius thv shift ,tranne to its uppvrposition.

it 11 printing lt'vy lvrvr hv now tlvprvssvil the typt .1111 will printfrom thv lowvrniost one of thv typvs iT. 11s shown in Fig. 5.

lVhvn thv pztl'ts :irv in norinul position :is shown in Fig. il. thvrollvr TL rvsts on 11 hori- 'fiontul lvtlgv or shoultlvr T5 loi-111ml onthv :11111 of thv lcrvr 5T. nntl thv rollvr (3T livs (lirvf-tlv hvnvnth:1 horizontal lvilgjv or shoullvr Tt? on thv lv'vvr 3H. suitl shouhlvrsconstituting tlwvllsl in thv rvspvvtirv ruins. 'l`hv vonstruvtion issuvh that thv two rollvrs'urv in vtlvvt hvltl hvtwvvn thv twohori'fzontnl sl1o11hlvrsor(lwvlls11mlTtsothutniotion oi5 thv shift't1-111111l viihvz' up or tlown from its initlillv, position ispositirvlr prvrvntvti. lt will hv svvn,tl111t 1111 :nl iustnivnt ol' thvinici-:1111 srrvw h2 rvsulting in :1 hollily tnovvinvnt of hothhvll-vl'unks 51T :intl 5H up or 'town togfvthvr. adjusts thv typv l11rsvf "n1vnt, with rvhition to thv plutvn'f? t'or :ill thrvv of thvpositions oll smid svg'nn-nl. .Y

ln ortlvi' to liniitthv1l 1.1;1\'11\\'1 l motion of thv. lt'vys 5323ninth-l, two iis-top s'vrvii's 77 111'v, tiii'vmlvti th1'oug'1r`tl1vIh111 2l hnvuth thvI arms 137, .35i Suid stop screws cnn be :idi-

meneer l 5 sted up and down and retained in adsted position by setscrews 7S,

ace key 8@ is here shown mounted on the forvvard ends of lever arms 8lwhich at r ear ends are secured to a rock shaft 82 voted :it its ends inthe frame plates 2O tie detachable frame. Near the middle of the rockshaft 82 an arm S3 is secured which -projects toward the rear of themachine parallel with the key levers il. ln the machine a suitableuniversal is mounted Vjust above this arm 83 end the rear ends ol' thekey levers, and said universal'bar operates the escapement and otherdevices.

The shiftable features of the type action and case shift mechanism arenot claimed herein, but are niade the subjectmatter of a divisionalapplication liled lieb. 5, lille,

, se. No, 816,757.

Various changes can oe made in the details of construction andarrangement Witho`it departing from my invention.

1xWhat l claim as new and desire to secure hy Letters Tatent, is1- l. lna front strike typewriting machine, the combination ol' a front striketype bar, a link extending from said type bar toward 'the rear of themachine, a suh-lever having en arm extending downward at aninclinaticnjtovvard the front of the machine and connected with saidlink, and said sub-lever having another arm extending toward the rear, akey lever of the lirst order and e push link connected with the rear endof said key lever and with said rearwar ly eX- tending arm of thesuhdever.

2. in a front strike typevvriting machine, the combination of a seriesoi' front strike type bars, inks extending from said type 7oars towardthe rear of the machine, aseries of sub-levers pivoted in a. straightrow and having arnis extending downward and toward the front of themachine and connected with said links, said sub-levers also having armsextending toward the rear of the inachine, a series ofkey levers o thefirst order, and push links connecting the rear ends of said kev leverswith said rearwardly extendingl arms.

ln a iront strike typevlriting machine, the combination o la' series otype bers, a series o sub-levers connected with said-type hars, a seriesof substantially straight key levers of the first order each having itsrear end connected by an upright link with one of said sub-levers, andkevs mounted on said key levers in a plurality of rovvs at diierentelevations, the tulcruins of the key levers being arranged in transversetiers, the lowest tier being nearest the front ot' the machine, and thehighest tier being nearest the rear of the machine, the respectivedistances oi' said fulcriuns from the back ot' the machine being such asto give to the several rows of keys equal leverages on said sub-leversand. the keys that are situated at a higher elevation having thefulcrums ol', their key lcvers at a greater elevation than the 'nlcrinnsof lower keys.

l. ln a front strike typeivriting machine, the combina-tion ol' a serieso'i' front strike type bars pivoted in a segment, a series ot'sub-levers in 'the rear oi' said series ot' type bars, said sub-levershaving arms extending Jfrom the pivots of said levers downward at aninclination toward the front of the niachine, links connecting .saidarms with said type bars, Mose links that connect with type bars nearthe middle ot' the system extendingforward at a doivnivrard inclinationand those links that connect with type bars near the ends oi lie j'stemextending toward the front of the mac ie an upward inclination wherebysaid sub-levers have a higher initial leverage on the type bars near themiddle of the system than those near the end of the syst-ein and impartto said niiddle type bars greater acceleration.

ln a front strike typevvriting n ichine, the combination of a series offront strike type hars pivoted in a segment, a se ies of sub-leverspivoted in a straight line and having arms extending 'from 'their pivotsand downward at an inclination toward said nient, links connecting saidsub-levers with said type bars, some ol said links extending from saidsub-levers to said type oars at an upward inclination and others at adoivnvvard inclination, a series of key levers, and links connectingsaid key levers with said sub-levers in such fashion as to afl'ord anacceleration of said sub-levers.

Signed at t Ae borough of llziiihattan, city of New York, in the countyol" New York and State of New York, this @sth da); of April, A, D. 1913.

ARTHUR W. Ell/HTH.

Witnesses:

CHARLEs E. Sii/HTH, E. M.l VELLS.

